OONI Probe users in Czechia have collected 13,740,658 measurements from 323 local networks.
Explore the data below to check the accessibility and/or blocking of sites and services.
The graph below provides an overview of OONI Probe measurement coverage. It shows how many results have been collected from each OONI Probe test category, as well as how many networks have been covered by tests.
By looking at this graph, you can understand if there is enough data to draw meaningful conclusions. If there is not enough data and you are in the country in question, install OONI Probe, run tests, and contribute data!
Check whether websites have been blocked.
Testing methodology: OONI's Web Connectivity test, designed to measure the DNS, HTTP, and TCP/IP blocking of websites.
Tested websites: Citizen Lab test lists
Please note that unless a block page is served, some anomalous measurements may contain false positives. We therefore encourage you to examine anomalous measurements in depth and over time.
Confirmed blocked categories
Check whether instant messaging apps and circumvention tools are blocked.
The following results were collected through the use of OONI Probe tests designed to measure the blocking of WhatsApp, Facebook Messenger, Telegram and Signal.
Monitor Internet outages through public, third-party data sources.
If you notice a drop in all signals, that might serve as an indicator of an Internet outage.
Learn more about Internet outages and their impact through the #KeepItOn campaign.